Mechanisms of late-stage rift deformation: evidence from new 3D seismic data over the West Iberia margin

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dc.contributor.advisorSawyer, Dale S
dc.creatorJordan, Brian E
dc.date.accessioned2017-08-03T17:26:27Z
dc.date.available2017-08-03T17:26:27Z
dc.date.created2016-05
dc.date.issued2016-04-21
dc.date.submittedMay 2016
dc.date.updated2017-08-03T17:26:30Z
dc.description.abstractI describe a new 3D seismic dataset over the West Iberia margin that demonstrates the complex 3D architecture of hyperextended continental crust and exhumed continental mantle at the distal edge of the margin. Faulted continental crustal blocks show higher degrees of extension in the north than the south. Similarly, pre-tectonic sediments are cut by more small-scale normal faults in the north. I hypothesize that extension within the frontal basin was constrained by basement topography, specifically a small mantle ridge identified at the southern extent of the basin that may have obstructed the extension of the continental crustal blocks and overlying sediments. Several thrust faults also cut the pre-tectonic sediments and are interpreted to be the result of gravity-driven sliding during late-stage extension. After large-scale extension of continental crustal blocks, further extensional creep caused small-scale normal faulting of the pre-tectonic sediment in the north.
dc.format.mimetypeapplication/pdf
dc.identifier.citationJordan, Brian E. "Mechanisms of late-stage rift deformation: evidence from new 3D seismic data over the West Iberia margin." (2016) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/96563">https://hdl.handle.net/1911/96563</a>.
dc.identifier.urihttps://hdl.handle.net/1911/96563
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectIberia
dc.subjectGalicia
dc.subjectrift
dc.subjectextension
dc.subjectmagma-poor
dc.subjectdeformation
dc.subjectseismic
dc.subjectinterpretation
dc.titleMechanisms of late-stage rift deformation: evidence from new 3D seismic data over the West Iberia margin
dc.typeThesis
dc.type.materialText
thesis.degree.departmentEarth Science
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
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